. 2015 Jun 19;5:11439. doi: 10.1038/srep11439

Table 4. Estimated PIC percentage and stock over 0–100 cm for cropland and shrub land in the Yanqi Basin, using different values for relative contributions (%) of SOC decomposition (A_SOC, i.e., 1-a-β) and atmospheric CO₂ (λ).

A_SOC	λ^a	Cropland		Shrub land		Difference	Accumulation rate
		%	kg C m⁻²	%	kg C m⁻²	kg C m⁻²	g C m⁻² y⁻¹
		50	0	42.4	18.6	29.5	11.9	6.7	112
25	0	41.7	18.2	29.2	11.8	6.4	107
50^a	10−70	42.4	18.6	36.4	13.4	5.2	87
50	30−90^b	42.4	18.6	39.7	14.6	4.0	67
25	30−90	41.7	18.2	39.1	14.4	3.8	63

^aThis row represents the standard calculation used in this study.

^bλvalues are set as 90%, 70%, 50% and 30% for the 0–5, 5–15, 15–30 and 30–50 cm in those profiles with low SOC (<7 g kg⁻¹ in 0–15 cm).

Table 4. Estimated PIC percentage and stock over 0–100 cm for cropland and shrub land in the Yanqi Basin, using different values for relative contributions (%) of SOC decomposition (ASOC, i.e., 1-a-β) and atmospheric CO2 (λ).